Patch 6.2.0 (2015-06-23): Now only grants immunity to root and snare effects and the effect is now cancelled if the Rogue is affected by other crowd-control effects.
Hotfix (2015-06-29): "Killing Spree should now correctly only provide immunity to roots, snares, and knockback effects."
Hotfix (2015-06-30): "Killing Spree no longer provides immunity to Crowd Control abilities, regardless of Battle Fatigue."
как-то так